<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>字符串形式的ref</title>
    <script src="./js/react.development.js"></script>
    <script src="./js/react-dom.development.js"></script>
    <script src="./js/babel.min.js"></script>
    <script src="./js/prop-types.js"></script>
</head>
<body>
    <div id="app"></div>
    <script type="text/babel">
        class Abc extends React.Component{
            showData1 = ()=>{
               // console.log(this.refs.input1)
                const{input1} = this.refs
                alert(input1.value)
            }
            // 一定要是箭头函数,否则拿不到this
            showData2=()=>{
                const {input2} = this.refs
                alert(input2.value)
            }
            render(){
                return (
                  <div>
                      <input ref="input1" type="text" placeholder="点击按钮提示数据"/>&nbsp;
                      <button onClick={this.showData1}>按钮</button>&nbsp;
                      <input ref="input2" onBlur={this.showData2} type="text" placeholder="失焦提示左边输入框数据"/>
                  </div>
                )
            }
        }
        ReactDOM.render(<Abc />,document.getElementById('app'))

    </script>
</body>
</html>
